Select the amount you would like to donate to Gríma Irmudóttir's 300 mi challenge.
Calculate your donation based on an amount per-mile Gríma Irmudóttir has committed to ride this September. Your total donation will be the amount you select multiplied by Gríma Irmudóttir's 300 mi challenge goal and will be charged up-front.
A receipt will be sent to this email address
